Charged pions from Ni on Ni collisions between 1 and 2 AGeV

Details Charged pions from Ni on Ni collisions between 1 and 2 AGeV Charged pions from Ni on Ni collisions between 1 and 2 AGeV

1997-04-24

arxiv.org/abs/nucl-ex/9704009v1

Z.Phys. A359 (1997) 55-65

Physics

Nuclear Physics

Nuclear Experiment

22 pages, Latex using documentstyle[12pt,a4,epsfig], to appear in Z. Phys.A

Scientific paper

10.1007/s002180050367

Charged pions from Ni + Ni reactions at 1.05, 1.45 and 1.93 AGeV are measured with the FOPI detector. The mean $\pi^{\pm}$ multiplicities per mean number of participants increase with beam energy, in accordance with earlier studies of the Ar + KCl and La + La systems. The pion kinetic energy spectra have concave shape and are fitted by the superposition of two Boltzmann distributions with different temperatures. These apparent temperatures depend only weakly on bombarding energy. The pion angular distributions show a forward/backward enhancement at all energies, but not the $\Theta = 90^0$ enhancement which was observed in case of the Au + Au system. These features also determine the rapidity distributions which are therefore in disagreement with the hypothesis of one thermal source. The importance of the Coulomb interaction and of the pion rescattering by spectator matter in producing these phenomena is discussed.

Affiliated with

Also associated with

No associations

Rating

Charged pions from Ni on Ni collisions between 1 and 2 AGeV does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Charged pions from Ni on Ni collisions between 1 and 2 AGeV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charged pions from Ni on Ni collisions between 1 and 2 AGeV will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-268568